
16 Control Chart Platform Excluded, Hidden, and Deleted Samples 365
16 Quality Control with Control Charts
Excluded, Hidden, and Deleted Samples
The following table summarizes the effects of various conditions on samples and subgroups:
Rule 10 X is triggered when ten consec-
utive points are on one side of the
mean.
Tab le 16 .2 Westgard Rules (continued)
UCL
Avg
LCL
+1s
+2s
+3s
-1s
-2s
-3s
Tab le 16 .3 Excluded, Hidden, and Deleted Samples
Sample is excluded before creating
the chart.
Sample is not included in the calculation of the limits,
but it appears on the graph.
Sample is excluded after creating the
chart.
Sample is included in the calculation of the limits, ...